23 results about "Oscillator system" patented technology

The application relates to the technical field of intelligent control, and discloses a hip exoskeleton control method and system based on gait pattern prediction and gait phase estimation, a terminal and a storage medium, the method comprising the following steps: constructing an initial unsupervised terrain detection model and training the model to obtain a target unsupervised terrain detection model; inputting an environment binary image into the target unsupervised terrain detection model to obtain a terrain detection result, and obtaining a gait pattern prediction result based on a majority voting strategy; obtaining a target gait phase estimation based on an adaptive oscillator system according to a hip joint angular velocity; obtaining a net auxiliary torque based on an expected auxiliary torque curve, a gait pattern prediction result and the target gait phase estimation, and switching a hip exoskeleton assistance mode according to the net auxiliary torque. The unsupervised terrain detection model avoids labeling a large amount of data, the terrain detection is combined with the exoskeleton control, and the terrain self-adaptive walking capability of the exoskeleton is enhanced.

In one example, an RF oscillator system includes a laser source configured to emit laser light, a housing, a crystalline microresonator disposed within the housing, and a photonic integrated circuit disposed within the housing, the photonic integrated circuit including an optical waveguide network and configured to generate a clock signal based on the laser light. The RF oscillator system may further include at least one photonic wirebond configured to couple the laser light between the optical waveguide network and the crystalline microresonator via evanescent coupling; laser control circuitry disposed within the housing and configured to lock a frequency of the laser light to a resonance of the microresonator to generate the clock signal; and a direct digital synthesizer disposed within the housing and configured to produce a tunable oscillator signal based on the clock signal.

The invention belongs to the technical field of vibration reduction control of high-rise structures such as power transmission towers, and particularly relates to a tuned mass damper with eddy current and particle damping and adjustable frequency damping. Comprising a mass block, a compression spring, a guide rod, a linear bearing, a copper plate, a back plate, a rubber gasket, a first countersunk head screw assembly, a first permanent magnet set, a second countersunk head screw, a cover type nut, a shell cover plate, a shell, a sealing plate, a sealing ring, a steel pipe, a hoop assembly, a hexagon bolt assembly, a silicon steel sheet and a second permanent magnet set. The mass block is a rectangular thick plate, and the compression springs are arranged on the upper and lower surfaces to form an oscillator system. Copper balls and permanent magnets are additionally arranged on the basis of common eddy current damping to form a second damping system, eddy current damping and particle damping are combined, and the vibration reduction effect is better; under the same appearance size, damping and frequency are adjustable, the vibration reduction requirements of steel pipes at different positions of a power transmission tower are met, parts can be machined in batches during production, the damping ratio and frequency can be debugged on site, the vibration reduction requirements of different objects are met, and the project execution time is saved.

The invention discloses a method for analyzing time-frequency characteristics of collision vibration by using a segmented B-spline wavelet collocation method, which comprises the following steps of: (1) establishing a dynamic equation for wavelet discretization, discretizing a dynamic control equation of a collision-vibrator system by using a 4-order B-spline wavelet basis function, and establishing a nonlinear algebraic equation set about a wavelet coefficient; (2) carrying out segmented iterative solution on the time domain, dividing the whole time domain into a plurality of sub-time periods which are connected in sequence, and carrying out iterative solution on the nonlinear algebraic equation set in each sub-time period to obtain a global wavelet coefficient; and (3) analyzing the time-frequency characteristics, and directly calculating energy distribution based on the wavelet coefficient to realize time-frequency joint characterization. The invention aims to provide a method which can fuse solution of system response and extraction of time-frequency characteristics in a unified mathematical framework, and realizes high-precision time-frequency joint characterization by directly solving wavelet coefficients, thereby overcoming inherent defects of an existing two-step method.

Disclosed is a quartz oscillator system comprising: a quartz oscillator comprising a quartz crystal and an oscillator circuit whose frequency is based on a resonant frequency of the quartz crystal; a monitoring module for monitoring an output frequency of the quartz oscillator; a control system external to the quartz oscillator, and configured to compare the output frequency with a setpoint frequency, and apply an adjustment signal to an electronic circuit of the quartz oscillator to adjust a frequency of the quartz oscillator based on the comparison with the reference frequency.

An automated robotic device for coating application comprising an anchoring robot having magnetic tracks, a winding system and an electrical panel, an end effector robot with a set of active omnidirectional wheels, a set of passive omnidirectional wheels, an oscillator system with linear motor and an anchoring point, in which the oscillator system with linear motor moves a tool for applying the coating and a coupling between the anchoring robot and the end effector robot.

The application discloses a double-potential well spring oscillator system experimental device and method. A gas cushion guide rail and a non-inertial reference system motion module are arranged on a horizontal bottom plate, a sliding block is slidably arranged on the gas cushion guide rail, and an adjustable spring fixing support is arranged perpendicularly to the direction of the gas cushion guide rail. The adjustable spring fixing support is connected to the horizontal limiting tension and compression spring module and the gas cushion guide rail through the gas cushion guide rail, and the adjustable spring fixing support is provided with a visual module. A digital display push-pull force gauge is further arranged above the gas cushion guide rail, and the detection end of the digital display push-pull force gauge is connected to the sliding block. The method comprises a quasi-static mode, a dynamic mode and a chaotic mode, the movement between the adjustable spring fixing support and the sliding block is adjusted, the sliding block is adjusted to have different friction on the gas cushion guide rail, different experimental test modes are generated, and experimental simulation is realized. The application comprehensively and accurately displays various nonlinear dynamic phenomena of the spring oscillator in the double-potential well system, provides rich experimental content and a powerful tool for college physics experimental teaching, and has a wide application prospect.

A system and a method for voltage-controlled oscillator (VCO are disclosed. A first VCO core includes a first cross-coupled (CC) transistor pair having a first conductivity type and a second cross-coupled transistor pair having a second conductivity type. A second VCO core includes a third CC transistor pair having the first conductivity type and a fourth CC transistor pair having the second conductivity type. A first synchronization trace connects the first CC transistor pair to the third CC transistor pair. A second synchronization trace connects the second CC transistor pair to the fourth CC transistor pair. The first and second VCO cores are arranged on a circular path on a substrate and disposed opposite with each other with respect to a center of the circular path.

A synchronization detection device includes: a pseudo-vorticity matrix calculation unit that inputs time evolution information of phases from an oscillator system including a finite number of oscillators and calculates a matrix having elements each of which is a discretized value of a phase difference obtained by two of the oscillators by time evolution; a synchronization graph generation unit that generates a synchronization graph that visualizes two-point synchronization with a graph representation; a partial synchronization set detection unit that detects a plurality of subsets of the oscillators having no common portion and partially synchronized in a set of a finite number of the oscillators in the synchronization graph; and a synchronization index calculation unit that generates an index characterizing partial synchronization of the oscillator system using a calculation result calculated by the pseudo-vorticity matrix calculation unit and a partial synchronization set detected by the partial synchronization set detection unit.

The invention discloses a piecewise B-spline wavelet periodic response calculation method for a collision vibration system, which comprises the following steps: (1) establishing a dynamic equation for wavelet discretization, discretizing a dynamic control equation of a collision-vibration system by using a 4-order B-spline wavelet basis function, and establishing a nonlinear algebraic equation set about a wavelet coefficient; (2) carrying out segmented iterative solution on the time domain, dividing the whole time domain into a plurality of sub-time periods which are connected in sequence, and carrying out iterative solution on the nonlinear algebraic equation set in each sub-time period to obtain a global wavelet coefficient; and (3) establishing periodic response reconstruction and analysis, reconstructing displacement, speed and acceleration response of the system based on the wavelet coefficient, and judging periodic response characteristics through judgment conditions. The invention aims to provide a method for calculating the periodic response of a collision-vibration system directly, accurately and efficiently based on a segmented 4-order B-spline wavelet technology.

The present application belongs to the technical field of electronic components and frequency control, and specifically relates to an anti-aging crystal oscillator system based on a neural network and a memristor. The present application uses the time series prediction capability of the neural network to provide algorithm support for the aging trend prediction of the crystal oscillator, predicts the aging trend through the neural network, realizes the leap from "lagging correction" to "feedforward compensation", and fundamentally eliminates compensation delay. In combination with the memristor, the present application has the characteristics of adjustable resistance state, non-volatile storage and low-power operation, and constructs an adaptive and highly reliable analog computing and storage integrated circuit. Finally, the precise prediction capability of the neural network and the storage-operation integrated characteristics of the memristor are deeply integrated, forming an integrated closed-loop solution for the aging prediction and active compensation of the crystal oscillator. The neural network algorithm can be solidified in the microcontroller, the memristor is compatible with the CMOS process, and the miniaturization and on-chip integration of the entire crystal oscillator system can be realized.

Aspects of the present disclosure provide an integrated circuit (IC). The IC includes oscillator systems, each configured to generate a respective oscillating signal. The IC includes signal paths, each signal path coupled to a respective one of the plurality of oscillator systems, a first signal path of the plurality of signal paths including a mixer and another signal path including an audio generator. The audio generator is configured to generate an audio signal based on the oscillating signal from the corresponding oscillator system. And a mixer coupled to the audio generator of the other signal path of the plurality of signal paths, and configured to generate a mixed signal for RSB calibration based on the audio signal from the audio generator of the other one of the plurality of signal paths and the oscillation signal from the oscillator system coupled to the first one of the plurality of signal paths.

The invention discloses a double-potential-well spring oscillator system experiment device and a double-potential-well spring oscillator system experiment method. An air cushion guide rail and a non-inertial reference system motion module are arranged on a horizontal bottom plate, a sliding block is installed on the air cushion guide rail in a sliding mode, an adjustable spring fixing support is arranged in the direction perpendicular to the air cushion guide rail, and the adjustable spring fixing support is connected with the air cushion guide rail through a horizontal limiting tension-compression spring module. A visual module is arranged on the adjustable spring fixing bracket; a digital display pull and push dynamometer is further arranged above the air cushion guide rail, and the detection end of the digital display pull and push dynamometer is connected with the sliding block; the method comprises a quasi-static mode, a dynamic mode and a chaos mode, movement between the adjustable spring fixing support and the sliding block is adjusted, different friction of the sliding block on the air cushion guide rail is adjusted, different experiment testing modes are generated, and experiment simulation is achieved. Various nonlinear dynamic phenomena of the spring oscillator in a double-potential-well system are comprehensively and accurately displayed, rich experiment contents and powerful tools are provided for college physics experiment teaching, and the method has wide application prospects.

The invention belongs to the technical field of electronic elements and frequency control, and particularly relates to an anti-aging crystal oscillator system based on a neural network and a memristor. According to the method, algorithm support is provided for aging trend pre-judgment of the crystal oscillator by using the time sequence prediction capability of the neural network, the aging trend is predicted through the neural network, spanning from'lag correction 'to'feed-forward compensation' is realized, and compensation delay is eliminated fundamentally. In combination with the characteristics of resistance state adjustability, nonvolatile storage and low-power-consumption operation of the memristor, a self-adaptive and high-reliability analog calculation and storage integrated circuit is constructed; and finally, the accurate prediction capability of the neural network and the storage-operation integration characteristic of the memristor are deeply fused to form an integrated closed-loop solution for aging prediction and active compensation of the crystal oscillator. The neural network algorithm can be solidified in the microcontroller, the memristor is compatible with the CMOS technology, and miniaturization and on-chip integration of the whole crystal oscillator system are achieved.

In one example, an RF oscillator system includes a laser source configured to emit laser light, a housing, a crystalline microresonator disposed within the housing, and a photonic integrated circuit disposed within the housing, the photonic integrated circuit including an optical waveguide network and configured to generate a clock signal based on the laser light. The RF oscillator system may further include at least one photonic wirebond configured to couple the laser light between the optical waveguide network and the crystalline microresonator via evanescent coupling; laser control circuitry disposed within the housing and configured to lock a frequency of the laser light to a resonance of the microresonator to generate the clock signal; and a direct digital synthesizer disposed within the housing and configured to produce a tunable oscillator signal based on the clock signal.

This disclosure describes systems and methods for implementing a dual core voltage controlled oscillator (VCO). The dual core VCO may include a transformer structure having a planar circle geometry. The transformer structure may be divided into a first half and a second half. Each half of the transformer structure may include a first end and a second end. The dual-core VCO may include a first core and a second core. The first core may be coupled with the first end of the first half and the first end of the second half. The second core may be coupled with the second end of the first half and the second end of the second half. The transformer structure may be configured to reduce an effective inductance of the dual-core VCO by a first threshold while maintaining impedance within a second threshold.

The application discloses a kind of based on amplitude heterogeneity partial amplitude death implementation method.By constructing the Stuart-Landau coupled oscillation system model with the amplitude heterogeneity subject to uniform distribution, the conjugate average field coupling is introduced, combined with partial amplitude death steady-state analysis and its linear stability analysis, the continuous spectrum and discrete spectrum of coupled oscillator system are solved, the upper boundary of partial amplitude death boundary and the amplitude death proportion expression are determined.The influence of amplitude distribution parameters and coupling strength on partial amplitude death can be determined, and the partial amplitude death boundary line, death proportion and phase transition process can be identified.This method breaks through the limitations of traditional numerical simulation fitting, and the scheme is universal, which can meet the high-precision regulation and control requirements of complex coupled systems.It can provide reliable theoretical basis and technical support for the dynamic analysis, structure optimization and precise regulation and control of complex oscillation systems such as nonlinear systems, coupled oscillators, artificial neural networks and power systems.

The invention discloses a circular single-layer vibration transmission sheet device, which belongs to the field of vibration transmission sheets, and comprises a flat sheet body, the flat sheet body comprises a central part, a peripheral part and a connecting support rod, the flat sheet body is of a circular structure, a plurality of discontinuous through holes or through grooves are formed in the flat sheet body, the peripheral part is used for being connected with a body of a device to fix the vibration transmission sheet, and the connecting support rod is connected with the central part. The central part is used for being connected with a moving part of the vibrator or the actuator so as to fix the vibration transmission piece and the moving part, the connecting supporting rod is used for connecting the peripheral part and the central part, and when the moving part of the bone conduction vibrator or the actuator moves, the connecting supporting rod provides symmetrical elastic support so as to fix the vibration transmission piece and the moving part. When the moving part vibrates in the Z-axis direction, the moving part is kept balanced and stable, and the number of layers between the central part and the peripheral part in the radial direction is single-ring layers when viewed from the central part to the peripheral part of the plain film body in the radial direction.

The invention relates to an impact response spectrum correction method combining impact response spectrum transformation with a spring oscillator equal displacement line. The invention relates to the technical field of impact response spectrum correction. A spring oscillator system is rigidly fixed to a floating impact platform through bolts, a sensor cable is connected to data acquisition equipment, explosion points are arranged, and explosives are fixed to the position away from the floating impact platform by a specific distance; starting to collect through data acquisition equipment, carrying out impact spectrum conversion on data measured by a test, comparing data of a displacement sensor with measured data of a spring oscillator in simulation calculation, and correcting an impact response spectrum. According to the invention, the load input of the equipment is more accurate, and the test data precision is improved.

Revealed is a method for calibrating a microelectromechanical (MEMS) oscillating system, comprising the MEMS oscillating system: a mechanical MEMS subsystem comprising at least one moving component; and an electronic system designed to convert a deflection of the moving component into a measurement signal applied to a readout output of the MEMS oscillator system; The procedure comprises the following steps: S1 - Determining a frequency-dependent raw signal characteristic of the MEMS oscillator system; S2 - Specifying a desired frequency response spectrum of the MEMS oscillator system; S3 - Determining a parameterized filtered signal characteristic at least partially by applying a parameterized filter function to the raw signal characteristic to realize the desired frequency response spectrum; S4 - Determining parameter values ​​of the parameterized filter function at least partially by minimizing a difference or a weighted difference between the parameterized filtered signal characteristic and the desired frequency response spectrum, and determining an actual filter function at least partially based on the parameter values; S5 - Calibrating the MEMS oscillator system at least partially using the actual filter function.

This invention discloses a vibration-damping boring bar with a built-in variable stiffness damper, comprising a cutting head, a connecting cover, a boring bar body, an electromagnet, an oscillator, a cantilever rod, a sliding support, a cantilever seat, a connecting rod, a pusher, a lead screw, a coupling, a motor base, a stepper motor, an intelligent control unit, and an acceleration sensor. An electromagnet is installed in the cavity at the front end of the boring bar body, with an axial gap between the electromagnet and the oscillator. The magnitude of the eddy current damping of the oscillator is controlled by the voltage. The other end of the oscillator is a cantilever rod, which passes through the sliding support and connects to the cantilever seat. The cantilever seat is fixedly connected to the boring bar. The motor controls the position of the sliding support, changing the cantilever rod's extension and thus altering the oscillator's stiffness. The acceleration sensor is located outside the boring bar, on one side of the cutting head. The intelligent control unit analyzes vibration signals and adjusts the motor rotation angle and electromagnet voltage to control the damping and stiffness of the oscillator system, achieving optimal vibration reduction. This invention is used for deep hole machining.

The invention provides a high-energy gamma source based on free electron laser inverse Compton scattering, comprising an electron accelerator system and an undulator system, the electron accelerator system is configured to generate a plurality of electron beam bunches and provide the electron beam bunches to the undulator system, the undulator system is configured to generate free electron laser by using a first electron beam bunch, and the undulator system is configured to generate free electron laser by using a second electron beam bunch. And gamma photons are generated through inverse Compton scattering between the second electron beam group and the free electron laser. Free electron laser generation and inverse Compton scattering processes are respectively completed in the same undulator by using multiple electron beam bunches, and the undulator system not only can meet the gain requirement of free electron laser, but also can provide an interaction area required by inverse Compton scattering. The limitation that a free electron laser device and a scattering interaction area need to be independently arranged is avoided, self-supply of the free electron laser light source and high integration and function multiplexing of the device are achieved, and a large number of gamma photons can be generated.

An oscillator system includes a oscillator structure configured to oscillate about an axis; a driver configured to generate a driving signal to drive an oscillation of the oscillator structure about the axis with an oscillation phase and an oscillation frequency, wherein the driver includes a phase detector configured to generate a phase error signal representative of a phase error between a measured oscillation of the oscillator structure about the axis and an expected oscillation having the oscillation phase; and a phase controller configured to receive the phase error signal and generate an actuation value based on the phase error signal, wherein the phase controller is configured to adjust the actuation value based on the phase error signal to adjust an actuation phase of the oscillator structure about the axis to minimize the phase error. The driver is configured to generate the driving signal based on the actuation value.